#
#  Copyright 2024 The InfiniFlow Authors. All Rights Reserved.
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#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.
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import base64
import io
import json
import os
import re
from abc import ABC

import requests
from openai import OpenAI
from openai.lib.azure import AzureOpenAI

from rag.utils import num_tokens_from_string


class Base(ABC):
    def __init__(self, key, model_name):
        pass

    def transcription(self, audio, **kwargs):
        transcription = self.client.audio.transcriptions.create(model=self.model_name, file=audio, response_format="text")
        return transcription.text.strip(), num_tokens_from_string(transcription.text.strip())

    def audio2base64(self, audio):
        if isinstance(audio, bytes):
            return base64.b64encode(audio).decode("utf-8")
        if isinstance(audio, io.BytesIO):
            return base64.b64encode(audio.getvalue()).decode("utf-8")
        raise TypeError("The input audio file should be in binary format.")


class GPTSeq2txt(Base):
    _FACTORY_NAME = "OpenAI"

    def __init__(self, key, model_name="whisper-1", base_url="https://api.openai.com/v1"):
        if not base_url:
            base_url = "https://api.openai.com/v1"
        self.client = OpenAI(api_key=key, base_url=base_url)
        self.model_name = model_name


class QWenSeq2txt(Base):
    _FACTORY_NAME = "Tongyi-Qianwen"

    def __init__(self, key, model_name="paraformer-realtime-8k-v1", **kwargs):
        import dashscope

        dashscope.api_key = key
        self.model_name = model_name

    def transcription(self, audio, format):
        from http import HTTPStatus

        from dashscope.audio.asr import Recognition

        recognition = Recognition(model=self.model_name, format=format, sample_rate=16000, callback=None)
        result = recognition.call(audio)

        ans = ""
        if result.status_code == HTTPStatus.OK:
            for sentence in result.get_sentence():
                ans += sentence.text.decode("utf-8") + "\n"
            return ans, num_tokens_from_string(ans)

        return "**ERROR**: " + result.message, 0


class AzureSeq2txt(Base):
    _FACTORY_NAME = "Azure-OpenAI"

    def __init__(self, key, model_name, lang="Chinese", **kwargs):
        self.client = AzureOpenAI(api_key=key, azure_endpoint=kwargs["base_url"], api_version="2024-02-01")
        self.model_name = model_name
        self.lang = lang


class XinferenceSeq2txt(Base):
    _FACTORY_NAME = "Xinference"

    def __init__(self, key, model_name="whisper-small", **kwargs):
        self.base_url = kwargs.get("base_url", None)
        self.model_name = model_name
        self.key = key

    def transcription(self, audio, language="zh", prompt=None, response_format="json", temperature=0.7):
        if isinstance(audio, str):
            audio_file = open(audio, "rb")
            audio_data = audio_file.read()
            audio_file_name = audio.split("/")[-1]
        else:
            audio_data = audio
            audio_file_name = "audio.wav"

        payload = {"model": self.model_name, "language": language, "prompt": prompt, "response_format": response_format, "temperature": temperature}

        files = {"file": (audio_file_name, audio_data, "audio/wav")}

        try:
            response = requests.post(f"{self.base_url}/v1/audio/transcriptions", files=files, data=payload)
            response.raise_for_status()
            result = response.json()

            if "text" in result:
                transcription_text = result["text"].strip()
                return transcription_text, num_tokens_from_string(transcription_text)
            else:
                return "**ERROR**: Failed to retrieve transcription.", 0

        except requests.exceptions.RequestException as e:
            return f"**ERROR**: {str(e)}", 0


class TencentCloudSeq2txt(Base):
    _FACTORY_NAME = "Tencent Cloud"

    def __init__(self, key, model_name="16k_zh", base_url="https://asr.tencentcloudapi.com"):
        from tencentcloud.asr.v20190614 import asr_client
        from tencentcloud.common import credential

        key = json.loads(key)
        sid = key.get("tencent_cloud_sid", "")
        sk = key.get("tencent_cloud_sk", "")
        cred = credential.Credential(sid, sk)
        self.client = asr_client.AsrClient(cred, "")
        self.model_name = model_name

    def transcription(self, audio, max_retries=60, retry_interval=5):
        import time

        from tencentcloud.asr.v20190614 import models
        from tencentcloud.common.exception.tencent_cloud_sdk_exception import (
            TencentCloudSDKException,
        )

        b64 = self.audio2base64(audio)
        try:
            # dispatch disk
            req = models.CreateRecTaskRequest()
            params = {
                "EngineModelType": self.model_name,
                "ChannelNum": 1,
                "ResTextFormat": 0,
                "SourceType": 1,
                "Data": b64,
            }
            req.from_json_string(json.dumps(params))
            resp = self.client.CreateRecTask(req)

            # loop query
            req = models.DescribeTaskStatusRequest()
            params = {"TaskId": resp.Data.TaskId}
            req.from_json_string(json.dumps(params))
            retries = 0
            while retries < max_retries:
                resp = self.client.DescribeTaskStatus(req)
                if resp.Data.StatusStr == "success":
                    text = re.sub(r"\[\d+:\d+\.\d+,\d+:\d+\.\d+\]\s*", "", resp.Data.Result).strip()
                    return text, num_tokens_from_string(text)
                elif resp.Data.StatusStr == "failed":
                    return (
                        "**ERROR**: Failed to retrieve speech recognition results.",
                        0,
                    )
                else:
                    time.sleep(retry_interval)
                    retries += 1
            return "**ERROR**: Max retries exceeded. Task may still be processing.", 0

        except TencentCloudSDKException as e:
            return "**ERROR**: " + str(e), 0
        except Exception as e:
            return "**ERROR**: " + str(e), 0


class GPUStackSeq2txt(Base):
    _FACTORY_NAME = "GPUStack"

    def __init__(self, key, model_name, base_url):
        if not base_url:
            raise ValueError("url cannot be None")
        if base_url.split("/")[-1] != "v1":
            base_url = os.path.join(base_url, "v1")
        self.base_url = base_url
        self.model_name = model_name
        self.key = key


class GiteeSeq2txt(Base):
    _FACTORY_NAME = "GiteeAI"

    def __init__(self, key, model_name="whisper-1", base_url="https://ai.gitee.com/v1/"):
        if not base_url:
            base_url = "https://ai.gitee.com/v1/"
        self.client = OpenAI(api_key=key, base_url=base_url)
        self.model_name = model_name


class DeepInfraSeq2txt(Base):
    _FACTORY_NAME = "DeepInfra"

    def __init__(self, key, model_name, base_url="https://api.deepinfra.com/v1/openai", **kwargs):
        if not base_url:
            base_url = "https://api.deepinfra.com/v1/openai"

        self.client = OpenAI(api_key=key, base_url=base_url)
        self.model_name = model_name
